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E. RAUL ENVELOPE MACHINE.

No. 446,124. Patented Ieb. 10,1891.

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(No Model.) .7 Sheets-Sheet 2. E. RAU. ENVELOPE MACHINE.

Patented Feb. 1

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E. RAU. ENVELOPE MACHINE.

No. 446,124. Patented Feb. 10, 1891.

(No Model.) 7 Sheets-Sheet 4.

E. RAU.

ENVELOPE MACHINE.

Patented Feb. 10,1891.

I (L wanton (No Model.) 7 SheetsSheet 5.

E. RAU.

ENVELOPE MACHINE.

No. 446,124. I Patented Feb. 10,1891.

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ENVELOPE MACHINE.

- Patented Feb. 10,1891.

' tion.

UNrrnn Sra'rns PATENT OFFICE.

EMANUEL RAU, OF BROOKLYN, ASSIGNOR TO THE EMANUEL RAU MANU- FACTURINGCOMPANY, OF NEW YORK, N. Y.

ENVELOPE-MACHINE.

SPECIFICATION forming part of Letters Patent No. 446,124, dated February10, 1891.

' Application filed January '7, 1890. Serial No. 336,208. (No model.)

To aZZ whom it may concern.-

Be it known that I, EMANUEL RAU, a citizen of the United States ofAmerica, residing at Brooklyn, in the county of Kings and State of NewYork, have invented certain new and useful Improvements inEnvelope-Machines; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to thedrawings making part thereof.

My invention relates to the operations of gumming, folding, anddelivering the envelopes afterthe blanks have been cut and placed on themachine; and it consists in certain mechanism and combinations ofmechanism fully hereinafter specified and claimed.

In order that persons skilled in the art may understand, construct, anduse my invention, 1 will proceed to describe it, referring to thedrawings, in which the same letters indicate like parts in the severalfigures.

Figure 1 is a top or plan view of my inven- Fig. 2 is an elevation fromthe end where the paste-boxes are located. Fig. 3 is a verticallongitudinal section of my machine on line X Y of Figs. 1 and 2. Fig. 4is a longitudinal vertical central section on line Z Z of Figs'l and 2.Fig. 5 is a vertical longitudinal central section of thegum-transferring rolls and operating mechanism, in part, drawn to alarger scale. Fig. 6 is a side elevation of a portion of the deliverymechanism on a larger scale. Fig. 7 is an enlarged detail view of thetipping foundation-plate mechanism. Fig. 8 is a detail side elevation ofthe mechanism for sustaining and feeding the envelopeblanks upward tothe gumtransferring rolls above. Fig. 9 is another detail side elevationof the tilting foundationplate. Fig. 10 is a top or plan view of thefoundation-plate in its horizontal position. Fig. 11 is a centralcross-section of the foundation-plate, Fig. 10; Fig. 12 is across-section of the foundation-plate and bedrplate of the machine,showing the clasps in elevation out of the way of the envelope to befolded. Fig. 13 is a front View of one of the connect- 7 ing-links, andFig. 14 is a top view of the same.

A is the frame of the machine. B is the horizontal table or top plate ofthe frame.

A is a yoke which projects above the table and guides thefolding-plunger.

O is the main driving-shaft.

O is a cam on the main shaft for operating the rack.

O is a reciprocating rack located on the top of the table B.

O is a cam-roll.

C is a forked rod which straddles at its I O to the table-frame A. Thearm C is pivotally joined to the bell-crank lever O bya in C is theforked portion of the upper arm of bell-crank O It straddles a pin 0,10- cated on a downwardly-projecting lug attached to the rack O Bythese operating connections the rack O is reciprocated horizontally whenthe shaft O is revolved, and it is limited in its motions bv the shapeof the cam O. A spring (3 aids in keeping camroll O in contact with camO.

C is the hearing which supports pin O on the frame A.

On the opposite end of shaftO cam D is 10- pivoted by a pin D to an armD keyed to a 1 shaft D, which runs across the machine. Arms D are keyedto shaft D inside its supporting-bearings D These bearings D aresupported above the frame and table of the machine by brackets D, Fig.2. 7

At the lower ends of arms D the roll D is carried and controlled in itsforward and back motions. The roll D is a pasting or gumming roll. Atits central portion it is provided or constructed with a raised portionD partially around its circumference and shaped to conform to the shapeof the line of gum to be transferred to the envelope-blank. The lowerends of arm D are forked and straddle the ends of the shaft D which runsthrough the roll D and extends each end beyond the roll for thispurpose. A gear-wheel D on the end of roll D meshes into and rests uponthe toothed rack 0 so as to be revolved by the rack when the rackreciprocates. Longitudinal linksD located oneach side of themachine-table, receive the ends of the shaft D and guide itsreciprocating motions. Thus when the shaft 0 is revolved the roll D is,through the operating mechanism, moved forward and back from one extremelimit of motion (shownin Figs 3,4, and 1) to the other extreme limit. v

A roll D is connected by the links D on on each side with roll D and hasthe same motions as D It also meshes into and is revolved by rack C Theends of its central shaft project and are guided in the forward and backmovements in the side grooves DP. It is also a gumming-roll, and hassimilar construction in every way with D".

E and E are gum-boxes containing gum in a dissolved state. In onegum-box E rolls'E and E and in gum-box E a roll E revolve in bearings bymeans of belt-connections and intermediate pulleys with the main shaft,which will be hereinafter explained and indicated.

- E are rolls which revolve alternately in contact with gum-rolls E andD and E and D respectively. They are supported in bearings E, whichbearings are attached to the gumboxes E and E by long arms pivotally, sothat they swing to and fro when forced to do so. Springs E hold theseswinging rolls in contact with rolls E They are thrown into con- 7 tactwith rolls D and D when D and D are moved forward so as to strike armsE, which hang down from and are attached to the pivotedarms'EThusthegumming-rollsD and D receive gum.

The gum-boxes E and E are supported above the frame-table oncross-brackets E, secured at each end to the table B.

Beneath the opening in the table 13 a pile of envelope-blanks F issupported on atable E, which is supported by upright rods F to whichthis table F is secured. These rods pass at their upper ends throughguides F in the table B at each side of the machine. At their bottomthey pass through guides and are connected to a bar E, which is drawnupward by a spring F attached to the frame A and the bar F Brake-shoes Ffit these rods on one side,which shoes are intermittently moved away andagainst the rods F by means of the double lever F secured on a rod Fwhich I runs from side to side across the machine and F are pendentguides on the under side of table B, which keep the position.

A vertical plunger-rod H has a guide-bearing at the top in yoke A at Hand lower down at H At its bottom it has a plate for pressing the gummedenvelope -blanks' into the usual folding-box beneath. H. The plate 11and its rod H are reciprocated up and down at the proper times bylink-connections H pivoted to the bar H and to the lever II. The otherend of H is jointed to a lug H on yoke A and is supported at one'end bysaidlug midway between the rod H and its jointed bearing in IT". A rod11*, which passes down to shaft 0 at its lower end, has a forkedextension H, which straddles said shaft. It also at its bottom supportsa cam-roll H which, with the rod H rests upon and is operated up anddown by a cam Hi Fig. 2, on shaft 0. It is kept in its contactenvelope-blanks in with said cam by the weight of the parts; but

a spring may be added in case of need. Thus through the parts designatedthe folding plunger rises and falls as required, the cam is set to givethe proper time to the operation, and the timing of all the operationsof the machine is regulated by the position of the various cams on theshaft 0.

, Directly beneath the folding-plunger is a folding-box above the tableB. The bottom of this box is a tipping foundation-plate I,

which rises and falls and tips to discharge the envelopes by mechanismdriven from the main shaft C. It has two lugs I, which project downward,as seen at Fig. 11. passes through holes in these lugs I, by which theplate I is attached to a plate 1 from which correspondinglugs I extendupwardly. Shaft I also passes through theselugs. Thus plates I and l arepivotallyjoined. Beneath the plate 1 from each end, rods I run down andconverge together at 1 Fig. 2, near the transverse center of themachine, and are subtended by a forked piece 1 which sustains a cam-roll1 on a cam 1 on shaft 0. The piece I straddles the shaft C, like theother cam attachments. On the under side of table B, on the outer sidesof the rods 1 subtend brackets 1 and they are joined to the table 13 byforked arms I togive rigidity. These brackets I are groovedlongitudinally, and feathers I on rods 1 run in these grooves to directtheir upward and downward movements and give them steadiness of motion.

Beneath the table B, situated at the ends of the tipping plate I, dependbracket-plates 1 provided with face cam-grooves 1 From the under side offoundation-plate I, at its sides, an arm I is secured, which extendsacross the vibrating center I of the plate, and by a pin and cam-roll 1the plate'I is tilted over, as shown in Fig. 9 in full lines when thepin I is in its extreme downward throw, by the operation of the cammechanism connected therewith, and when the pinl is in its ex- Thisplate is A shaft I 'ing the envelope until by tipping the plate I theclasps come in contact with the trippingpieces I which are bolted to theframe A,

and thus release the clasps and allow the envelopeto drop off the plate.These cla ps I are-secured to a shaft I on each end of the plate I andwork together, so that when one clasp is struck by the tripping-piece Ithe clasp at the other end of the rod 1 also works with it. When theenvelope is being folded by the plunger H the clasps I are thrown backout of the path-of the envelope by the clasps coming in contact with thebedplate of the machine, as shown in Fig. 12, and when the plungerretreats the springs I press the clasps I over onto the envelope andhold it firmly until the tipping of the plate I causes them to relaxtheir hold, a above explained. The usual drying-carrier K, placedbeneath the folding-box and tipping plate I, receives the envelopes andcarries them a distance to dry them and returns them into the receptacleK. A hinged piece K receives the dried envelope and pushes it forwardinto the re-I ceptacle K to pack the envelopes together. This hingedback or packing-piece K is operated back and forth by a pivoted doublelever K one end of which bears against the hinged piece K and the otherrests on the arms 1 so that it is vibrated back and forth at the propertimes by the movements of the tilting mechanism. A spring K aids inkeep: ing the hinged piece K against the double lever K This lever Kworks on and is supported by a rod K, which has bearings in the frame Aat its ends. The drying-carrier K is driven from the main shaft 0 and isof the usual construction. Longitudinal strips or plates Lare supportedabove the table B, under the plunger H, and over the foundationplate Iby standards L. Plates L extend or run crosswise between these plates Land are attached to them, leaving an opening formed by their inner sidesor edges of the size and shape of the folded envelope and conforming tothe shape of the folding-plunger H. The cross-plates L are flanged togive a proper side surface for proper folding of the blanks.

On the edges of plates L are longitudinal guide-cleats, in which acarrienplate M moves forward and back on the top of the plates L. Thiscarrier-plate has an opening through it of the shape and size of thefolding-plunger or folded envelope-blank. It is moved forward andbackward by lever M, which connects with said plate by a link M Thelever l\ divides into two branches 1 3 and is keyed to a cross-shaft Mat its lower end, which shaft has end bearings in the frame A. A lever h5 is keyed to the shaft M" and extends over a lifting-cam on main shaft0, which raises and lowers said lever and gives reciprocatory motionthrough the connecting-levers to the carrier table or plate M at theproper times to bring an envelope-blank under theplunger H, and over thefolding-box opening aforesaid on this carrier-plate M, at its forwardend, are lugs M, which catch the envelope-blank as the deliverymechanism throws it over them in the extreme forward throw of thecarrierplate and carries said blank to and under the folding-plunger andopening to be folded and dropped by the tipping foundation-plate.

The folders N,being of the usual construction, location, and operation,need not be here described. Horizontal guard-wires O, secured aboveplates L to back-stop 0', direct the envelope-blank over its uppersurface onto the carrier-plate. The inclined plates P, secured to andlocated between plates L at their rear ends, receive the envelope-blanksin trcmst'm to the carrier-plate M and guide its movements from beneath.

Q and Q are grooved pulleys supported on table B on bracket-bearings.Over these pulleysa belt passes and drives the gum-rolls E in theirrespective gum-boxes E and E. The shaft Q is driven by belt-connectionto the shaft C below it over chain-pulley Q On the inn erend of shaftQis a small groovepulley Q and near it, supported in a bearing on thetable B, is an idler-pulley Q. A belt Q passes around Q and under Qthence up over loose pulleys on shaft D and down over a groove-pulley oncross-shaft Q pendent from the shaft D by arms Q and keyed to shaft D,and thence back again to pulley Q This belt thus revolves shaft Q Apulley Q is located 011 shaft Q Near its center, longitudinally aroundthis pulley, a small cord passes to and around a loose pulley D on shaftD between the two gumming-surfaces on roll D out of the way of thegumming-surface, so that thecord receives no gum upon it.

From shaft D an arm Q hangs,which supports at its lower end a smallpulley Q ,which rests upon the cord Q as a take-up or tightener. Fromthe lower part of arm D hangs an arm Q which carries at its lower end asmall roller Q. It also comes in contact with the cord Q but on itsinner side, between this cord, which travels forward, and the roller Qthe gumming-roll D delivers the envelope-blank after it. is gummed, asshown in Fig. 5. The revolution of the roller Q and the travel of thecord Q carry the blank onto the carrier-plate M, guided by the guards Oand P above and below and by guards Fig. 3, sidewise attached to arm Q".A spring Q", wound around the shaft D, presses the arm Q and its pulleyonto cord Q Operation: The operation of the various parts is as follows:Envelope-blanks cut to the required shape are placed upon table F andpressed upward to the level of the under surface of the gumming-rolls Dand D by means of spring F guided by rods F and held firmly in positionby brake F. The positions of the various parts are shown in Figs. 1, 2,3, and 4, which show the gumming-rolls D and D in contact with theswinging gumtransferring rolls E ready to be revolved and to receivegum. By the revolution of the shaft C and cam 0-, through theintermediate mechanism before described, rack O is thrown backward andforward and revolves the rolls D and D in contact with thegum-transferring rolls These gum-transferring rolls have been throwninto contact by means of the pendent arms E struck and moved by theforward motion of the rolls D and D to their extreme backward limit.tion of the rack 0 in Fig. 5 indicates the gum- The gum-transferringrolls have previously received gum from the gum-rolls E and E,

ming-rolls D and D as having moved partially forward and in the act ofpicking up and delivering the gummed blank to the cord: and pulley,whichmoves it onto the carrier M.

The continued forward movement of the rolls D and D brings them to theirextreme forward movement ready to receive gum from thedistributing-rolls. The further revolution of the shaft C throws therack C backward and forward and revolves the rolls D and D in contactwith the distributingrolls. After the rolls D and D have received gumthey imprint it on the edges of the blank which are to be gummed, and atthe forward movement of roll D pick up the blank and deliver it tothe'pulley Q over its upper surface, between it and thetraveling cord Qwhich carries it onward to the carrier M, which has by the revolution ofthe shaft and through the carrier mechanism before described been movedforward to its extreme limit of motion ready to receive the blank thusgummed. The blank by means of the cord and pulley aforesaid is deliveredto the carrier over the retaining-lugs M. The carrier M is then movedbackward to i s extreme limit of motion, which carries the blank underthe folding-plunger II. This having been done, by a further revolutionof shaft 0 the rolls D and D are moved forward over the rack C untilthey come into the position shown in Figs. 1, 2, 3, and at, aspreviously described, ready to perform the same operation again. \Vhilethe gum is being applied to the blanks the brake F is released fromThese gumming-rolls D the plate L and onto the foundation-plate I. Theplunger then rises to the position shown in Fig. 3. Immediately thefolders N, operated by mechanism from shaft 0 in the usual way, fold theenvelope-flaps onto each other and stick them together, leaving one flapunstuck and but partially folded over. By the revolution of the shaft 0and through the mechanism before described the foundationplate thendescends, and in doing so the plate is tipped over and discharges theenvelope into the usual drying system K beneath. The envelope is thencarried a distance and then returned into the receptacle K, and is movedforward in receptacle K by the levers K and K and the hinged back pieceK as has been previously described. All of these various operations havebeen accomplished during one revolution of the shaft (3. The variouscams and mechanisms have been set, timed, and arranged to perform theirwork in succession, as described.

Having now fully described my invention and the manner in which I haveembodied it, what I claim as new, and desire to secure by LettersPatent, is

1. In an envelope-machine, the combination of the main frame, the tableF, on which envelope; blanks are carried, vertical rods mounted inbearings in the main frame and to which the table is secured, springsconnected to said rods, which hold them elevated and tend to lift them,brake-shoes engaging with the rods and adapted to move toward and fromthem, a lever-arm connected with the shoes, and a cam revolved by themain driving mechanism, which engages intermit tently with the leverarm.

2. The combination, in an envelope-machine, of the main frame, theblank-carrying table, the vertical rods to which the table is secured,springs connected with the rods which hold the table in an elevatedposition and tend to lift it, brake-shoesengaging with the vertical rodsand adapted to move toward and from them, a lever-arm to which thebrake-shoes are connected, a spring tending to hold the 1ever-arm insuch position as to hold the shoes against the vertical rods, and a camcarried around with the driving mechanism and adapted to intermittentlyoperate the lever to disengage the brake-shoes from the rods.

3. In an envelope-machine, a drying-frame or carrier, in combinationwith an envelopedelivery box located and secured beneath themachine-table and arranged to receive folded envelopes directly fromsaid drying-frame or carrier and provided with aback plate hinged tosaid delivery-box, and aspring and pivoted double lever adapted to takeagainst the hinged plate and vibrate it at each revolution of the mainshaft, all combined substantially as specified.

4. In an envelopemachine, the combination, with' the foundation-plate ofthe folding mechanism, of an arm provided with a camroll attached to andarranged beneath said plate, a plate provided with a cam-slot in I whichsaid roller moves, located below the table of the machine, anupward-and-downward-moving rod pivoted to said foundationplate, and acam mechanism for reciprocating said rod, located upon the main shaftbeneath, all combined and operating to tilt said foundation-platepositively and discharge one envelope from said plate at each revolutionof said shaft, substantially as specified.

5. The combination, with the foundationplate of the folding mechanism ofan envelope-machine and tilting mechanism, of the clasps arranged tohold an envelope firmly on said plate after it has been folded and torelease said envelope after the foundation-plate has been tilted over todischarge it, and tripping-pieces attached to the machine-table,substantially as specified.

6. The combination, with a gum-box of an envelope-machine, of thereciprocating gumming-roll and a gum-transferring roll seen red to saidgum-box by pivoted arms and provided with a pendent lug or arm locatedin the path of then'eciprocating gumming-roll and arranged to be thrownagainst said gumming-roll by the horizontal travel of thesame andagainst the gum-feeding roll in said trough by the action of a spring,all combined and operating substantially as specified.

7. In an envelope-machine, gumming-rolls geared upon their ends andconnected together by links, in combination with a rack located upon thetable of the machine, the pivoted forked rod C provided with a camroll 0secured to said rod and arranged to receive reciprocating motion from acam located on the main shaft, connected to said rack by the forkedlever 0 and a pin whereby the pivot-ed rack is caused to reciprocate,substantially as specified.

8. In an envelope-machine, gnmming-rolls ferring gum to the gumming-rollsecured together by reciprocatinglinks at their ends, and gears securedto the ends of said rolls, restiu g on and adapted to be revolved by areciproeatory rack beneath, all combined substantially as specified.

10. In an envelopeanachine, the oombina tion,with geared and guidedgumming-rolls and actuating mechanism from the main shaft by whichreciprocatory motion is given to said rolls, of a reciprocating rackbeneath said rolls and adapted to rotate said rolls by the movements ofthe said rack, substantially as specified.

11. In an envelope-machine, the combination, with reciprocating gearedand guided gumming-rolls adapted to be revolved intermittently onareciprocating rack beneath by the reciprocation of said rack and by asystem of lever-arms on shaft D, located above the bed-plate of themachine, and all receiving motion from the main shaft of the machine, ofa grooved driving-pulley and cord pendent from said lever-shaft, andaloose p'ulley centrally located upon the shaft of one of the saidgnmming-rolls and operating, in connection with the said grooveddriving-pulley, for receiving the envelope-blank from the gumming-rollsand transferring it to the carrier-plate, substantially as specified.

. EMANUEL RAU. Vitnesses:

W. L. BENNEM, J AS. E. WARNER.

